Abstract:

Microsatellite locus AY493302 was used to analyze the polymorphisms of 50 blue-eggshelled and 30 white-eggshelled Jinyun ducks for the correlation relationship between this marker and eggshell color of Jinyun ducks. The results showed that the genotype distributions of this marker between two eggshell color ducks were significantly different (P=2.247E-12). This denotes that microsatellite AY493302 was highly correlated with eggshell color of Jinyun duck. The frequency of genotype JJ (365bp/365bp) was also significantly different between two eggshell color ducks (P<0.0001). Furthermore, this genotype existed only in blue-eggshelled Jinyun ducks, while not in white-eggshelled ones. These suggested that genotype JJ (365bp/365bp) can be used to select the homozygous blue-eggshelled gene of Jinyun duck in the form of assistant marker.